function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_openBrWindow(theURL,winName,features){ //v2.0
  window.open(theURL,winName,features);
}
 
<!-- show layer -->
img_showclubsup=new Image() 
img_showclubsup.src="/club/images/club/icon_arr_up.gif"
img_showclubsdn=new Image() 
img_showclubsdn.src="/club/images/club/icon_arr.gif"


img_showmemup=new Image() 
img_showmemup.src="/club/images/club/icon_arr_up.gif"
img_showmemdn=new Image() 
img_showmemdn.src="/club/images/club/icon_arr.gif"


img_showmenuup=new Image() 
img_showmenuup.src="/club/images/club/bt_clubmanager_up.gif"
img_showmenudn=new Image() 
img_showmenudn.src="/club/images/club/bt_clubmanager.gif"

function chg_layer_img(name,img_name,img_on,img_off)
{
	if (document.all[name].style.display != "none") 
	{ 
		document.images[img_name].src = img_on.src
		document.all[name].style.display = "none" 
	} 
	else 
	{ 
		document.images[img_name].src = img_off.src
		document.all[name].style.display = "" 
	} 
}
<!-- show layer -->

// Scroll Menu  
var isDOM = (document.getElementById ? true : false);
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);
var isNS = navigator.appName == "Netscape";

function getRef(id) {
	if (isDOM) return document.getElementById(id);
	if (isIE4) return document.all[id];
	if (isNS4) return document.layers[id];
}

function getSty(id) {
	x = getRef(id);
	return (isNS4 ? getRef(id) : getRef(id).style);
}

var scrollerHeight = 10;
var puaseBetweenImages = 300;
var imageIdx = 0;

function moveRightEdge() {
	var yMenuFrom, yMenuTo, yOffset, timeoutNextCheck;

	if (isNS4) {
		yMenuFrom   = divMenu.top;
		yMenuTo     = windows.pageYOffset + 500;   // Top Position
	} else if (isDOM) {
		yMenuFrom   = parseInt (divMenu.style.top, 10);
		yMenuTo     = (isNS ? window.pageYOffset : document.body.scrollTop) + 500; // Top Position
	}
	timeoutNextCheck = 500;

	if (yMenuFrom != yMenuTo) {
		yOffset = Math.ceil(Math.abs(yMenuTo - yMenuFrom) / 20);
		if (yMenuTo < yMenuFrom)
			yOffset = -yOffset;
		if (isNS4)
			divMenu.top += yOffset;
		else if (isDOM)
			divMenu.style.top = parseInt (divMenu.style.top, 10) + yOffset;
			timeoutNextCheck = 10;
	}
	setTimeout ("moveRightEdge()", timeoutNextCheck);
}


function checkEmail(it)
{
	var atpos = 0 ;
	var validFieldValue = it.value ;
	if (validFieldValue.indexOf("@", 0) < 2 || validFieldValue.indexOf(".", 0) < 2 || validFieldValue.length < 5 ) {
		return true;
	}
	return false;
}

// pop_notice 
function open_notice(URL) {
    window.open(URL,'_blank','scrollbars=yes,resizable=yes,width=500,height=430');
}

//¹®¼­ °Ë»ö
function f_search(str) {
	if(str == 0 || event.keyCode == 13){
		sc = document.all.search_char.value;
		if (sc == "") {
			alert("°Ë»ö ´Ü¾î¸¦ ÀÔ·Â ÇϽñ⠹ٶø´Ï´Ù.");
		} else {
			location.href = "../search/search.asp?target=" + sc;
		}
	}
}

//¸Þ´º¿¡¼­ »ç¿ëÇÏ´Â ÇÔ¼ö
function menu_init(i) {
	showhide(i);
}